Cooling and lubricating apparatus for dies and metal-working machines.



F. C. AREY.

COOLING AND LUBRIGATING APPARATUS FOR DIES AND METAL WORKING MACHINES.

APPLICATION FILED FEB29, 1912.

1,036,173, Patented Aug. 20, 1912.

UNITED STATES PATENT OFFICE.

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Patented Aug. 20, 1912.

Application mama-a ae, ma. Serial. No. sea-:02.

To all whom it may concern." Be it known that 1,!FR'ID G nner, a citizen of the United States,- mldlngat Oak Park, county of Cook, State of Illinois, have invented a-certain new-and useful- Improvement in Co olin and Lubricating Apparatus 'for Dies an Metalorkingv Machines. and declare the followin *tobe a full, clear,

and exact description 0 the-same, sucl'uas' will enable others skilled in the art to which. it pertains to; make and use the same, refer-- I emulsion. The di culty of distributing the lubricant evenly over ediesand of regulating the flow of the lubricant duringthe o erationof the machine has alwaysmaide 1t necessa to use much more-oil or other lubricating material than is necessary for more lubrication and therefore therehasalwavs been a waste of lubricatingmatrml and a collection of -the same in lobules or masses upon the sheets passing t rough the machine. Where the product of the ma chine is to be painted after its completion it has heretofore been necessary to treat it u-ior to the painting 0 eration so as to clean it of the oil thereon. here the product is to be shipped in an unpainted condition the lubricant, art-icularlv where it is an emulsion of oil: has had the disadvantage of causing rust, so that often it has been necessarv to clean the product and paint it in "N or to make it salable. Not only has the lubricating operation heretofore been costly and incllicient, but even with the excess of lubricating material employed it has been found impossible to keep .the tem erature of the slitting dies within safe wor ting limits after a predetermined peripheral speed has been reached and therefore the capacity of machines has been kept down by the tempernture factor.

The object of my invention is to reduce a simple and novel expedient by wh ch metal workin dies, such as slitting dies, may be lubricated efiieiently with a minimum amount of lubricant, in such a way that the lubricant cannot collect upon the work in globules or masses of any appreciable size ut will be caused to evaporate almost as soon as the work has left the machine, and in such a way that the dies are cooled sulliciently to permit the capacity of a machine to be increased greatly beyond that which has heretofore been practicable.

The various features of novelty whereby my invention is characterized will be horoina or pointed out with particularity in the claims; but, for a full understanding of my invention and of its object and advantages, reference may be had to the following detailed description taken in connection with the accompanying drawing, wherein:

Figure 1 is a front elevation of a machine for slitting sheet metal, the work-receiving table being omitted; and Fig. 2 is a view partly inside elevation and partly in section, onl enough of the framework being indicate to show the relation of the dies to the rest of the machine.

Referring to the drawing, 1 represents a suitable framework on which are mounted two horizontal parallel shafts 2 and 3, one above the other. On the shafts are coiipcratlng-disk-like cutters 4 and 5 which form the male and female members of cooperating slitting dies. In front of the dies is a work-receiving table 0 and behind the dies is another table, 7, for receiving the slitted sheets. Thetables are located-midway between the axes of the dies so that the work on the table 6 lies in position to enter between the tlies when it is pushed forward, and the table 7 lies in position to receive the work as it leaves the dies. Above the table, directly in front of the upper die, is an atomizer 8 of any suitable construct-ion. 3elow the table and directly in front of the lower die is a similar atomizer 9. Above the machine is supported a receptacle 10 for containing a suitable lubricant, either oil or an emulsion of oil. From the atomizers two ipes 11 and 12 extend into proximity to the ower end of the receptacle from which they receive lubricating material in any suitable manner, conveniently by providing the receptacle with two cocks or faucets 13 and 14, the mouths of which lie above the upper ends of the pipes 11 and 12, respectively. A pipe 15, having branches 16 and 17 leading to the two atomizers, is adapted to supply air under pressure to the atomizers. In the cooled in any suitable way, b"u't I have found that preliminary cooling below the temperature of the atmosphere is unnecessary where the pressure is great enough to cause a considerablr reduction in temperature through the adiabatiexpansio'n of the air as it passes through'and-out of the atomizers; a sutiicient pressure for. this purpose being about fifteen pounds above atmospheric pressure.

Assuming that the machine is in operation, the dies revolving and drawing in work from the receiving table, and the valve 18 and the cooks 13 and 14 being open: the,

lubricating material flows into the atomizers' and is there picked up by the incoming air so that each atomizer directs against one of the dies a conical current-of air, as indi cated 'at 19 and 20, respectively, impregnated with minute particles of lubricating material or, in other-words, with atomized lubricating material. regulating the flow of lubricating material, the amount which is supplied to the dies can be limited to that which is just sufficient for lubricating urposes, being supplied uniformly over the ies in the form of a fine mist. As the work passes through the dies,-on which there is only this fine IlllShOf lubricating material, there are no globules or masses of lubricating material to collect on the work, and therefore the work leaves the dies in a clean condition except that it may have collected a very fine misty coating which will be evaporated by the surrounding air almost instanta'neously.

It will thus be seen that I have roduced a simple and efiicient means for in ricating dies without permitting an accumulation of lubricating material to collect upon or be taken up by the work; at the same time effectively cooling the dies so that their speed .and consequently the capacity of the inachine may be greatly increased. 1

In order to explain fully the principle of my invention I have illustrated it as applied to a well known form of metal lath machine,

.pmizers, since my invention may be carried out by using any well known type of atomizer which will break up globules of lubricating material into finely divided particles and eject them in the form of a mist carried by the atomizing current of air.

I claim' 1- In combination, 'coiiperating rotary slitting dies \arranged one above the other, a work-receiving table lying in advance of the (1 es to support the work in position to be fed between-the dies, an atomizer arranged above the'table in position to direct a current against the .upper die, a second atomizer locatedbelowithe table in position to direct a. current against the lower die, means for delivering a lubricating material to said atomizers, and means for supplying the atomizers with'air under sufiicient pressure to cause a considerable lowering in the temperatureof the air through adiabatic expansion.

2. The combination with high speed rotary slitting dies, of 'atomizing apparatuslocated in proximity to the dies for enveloping them in a cold mist containing an atomized lubricating element, means for supplying to said apparatus a lubricating material, and means for supplying to said apparatus air under pressure.

3. The combination wit-h cooperating rotary slitting dies, of an atomizer located in proximity to each of the dies and adapted to direct against the same a fluid in the form of a conical spray, means for supplying to each of the atomizer-s a lubricating material, and means for supplying to each of the atomizers air under sufficient pressure to .cause the dies to be enveloped in a fine mist.

In testimony whereof, I, signthis specification in the presence of two witnesses.

FRED C. AREY.

Witnesses WM. F. Fnnunnnmiicn, RUBY V. Bnrocns. 

